Our basic understanding of core-collapse supernovae has not changed in decades. Large stars burn through core fuel and create heavier elements, consuming energy. This lack of energy allows gravity to pull the interior inward, collapsing it into a neutron star or black hole.

The released energy typically blows the star apart. However, observed supernova statistics indicate the model may be incomplete. A Physical Review D paper suggests flavor-changing neutrinos offer a potential explanation.

Neutrinos play a key role in current models, but these do not account for their ability to change identity. Observations show a discrepancy between star formation rates and supernova frequency. Progenitor star analysis reveals too few red supergiants.

Gravitational wave data from black hole mergers suggests a "mass gap" in black hole formation. Theory has faced flux, with models where everything or nothing blows up. Neutrinos are produced in prodigious quantities during fusion and neutron star formation.

While they rarely interact, their sheer number ensures enough collide with material around the stalled shock wave. This transfers energy, heating it to overcome gravity and allowing the shock wave to escape. Without this process, star contents would collapse into a black hole without an explosion.

Flavor changes may alter energy transfer dynamics.